石南油田石南21井区头屯河组二段储层精细描述
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摘要
针对石南21井区头屯河组二段(J2t2)砂体开展了储层精细描述研究。采用地震正演方法确定了石南21井区砂体在东部与基007井区砂体的关系,认为二者并不连通。采用地震反演方法确定了砂体北部及西部岩性边界。精细沉积微相研究表明研究区为三角洲前缘沉积,主要发育水下分流河道及河口坝微相,砂体较为发育。通过相控随机建模建立研究区三维地质模型,确定了储层物性及钙质夹层的空间分布。
According to the characteristics of J2t2 sand body, the fine reservoir description was carried out . Based on seismic forward modeling technology, the relation between Sand Body Wellblock Shinan 21 and Sand Body JI007 were determined and both were not connected. The north and the west lithological boundaries were identified by seismic inversion . It is concluded that reservoirs in Wellblock Shinan 21 are the delta front sedimentary,the sedimentary microfacies types of the major sand bodies are underwater distributary channels and mouth bar and bays. 3D stochastic geological model is built under the control of microfacies model. The spatial distribution of property and calcicolous intercalation are determined.
According to the characteristics of J2t2 sand body, the fine reservoir description was carried out . Based on seismic forward modeling technology, the relation between Sand Body Wellblock Shinan 21 and Sand Body JI007 were determined and both were not connected. The north and the west lithological boundaries were identified by seismic inversion . It is concluded that reservoirs in Wellblock Shinan 21 are the delta front sedimentary,the sedimentary microfacies types of the major sand bodies are underwater distributary channels and mouth bar and bays. 3D stochastic geological model is built under the control of microfacies model. The spatial distribution of property and calcicolous intercalation are determined.
引文
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[9]李少华,张昌民,林克湘,等.应用改进的布尔方法建立砂体骨架模型[J].石油勘探与开发,2000,27(3):91~92.
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[11]刘得光,凌云,杨召,等.石南21井区头屯河组高钙砂岩的成因及其意义[J].新疆石油地质,2005,26(2):170~171.
[2]姜秀清,沈财余.模型技术在地震解释中的应用[J].石油地球物理勘探,2002,37(增刊):189~195.
[3]苏朝光.模型分析技术在地震亮点定量描述中的应用[J].石油物探,2001,40(4):49~68.
[4]张永刚.地震波阻抗反演技术的现状和发展[J].石油物探,2002,41(4):385~389.
[5]姚逢昌,甘利灯.地震反演的应用与限制[J].石油勘探与开发,2000,27(2):53~56.
[6]刘喜武.几种地震波阻抗反演方法的比较分析与综合应用[J].世界地质,2005,24(3):271~275.
[7]王延光.储层地震反演方法以及应用中的关键问题与对策[J].石油物探,2002,41(3):299~304.
[8]尹艳树,吴胜和.用多种随机建模方法综合预测储层微相[J].石油学报,2006,27(2):68~71.
[9]李少华,张昌民,林克湘,等.应用改进的布尔方法建立砂体骨架模型[J].石油勘探与开发,2000,27(3):91~92.
[10]吴胜和,张一伟.提高储层随机建模精度的地质约束原则[J].石油大学学报,2001,25(1):55~58.
[11]刘得光,凌云,杨召,等.石南21井区头屯河组高钙砂岩的成因及其意义[J].新疆石油地质,2005,26(2):170~171.
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